The majority of the Paris attackers were killed soon after the massacre, but at least three escaped and were arrested afterwards.

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The Belgium attacks killed more than 30 people and injured hundreds more

The suspected ringleader, Abdelhamid Abaaoud, died in a police raid in northern Paris a few days after the attacks, and another key figure Salah Abdeslam was finally arrested in March after going on the run for several months.

Accomplice Mohamed Abrini, who is also thought to have been linked to the Paris attack, was arrested in Brussels on April 8.

The Belgium attacks – consisting of two suicide bombs at Brussels Airport and one at Maalbeek metro station – killed more than 30 people and injured hundreds more.